CN217440849U - Multi-way valve and water softener - Google Patents

Abstract

The application relates to a multiple unit valve and water softener, the multiple unit valve includes: the valve body is provided with a valve cavity with an opening at one end and a valve body flow passage communicated with the valve cavity; the valve core assembly is accommodated in the valve cavity and provided with a valve core flow passage; the first axial end of the valve rod extends into the valve cavity and is matched and connected with the valve core assembly in a transmission mode, the second axial end of the valve rod extends out of the opening end of the valve cavity, and the valve rod is provided with a valve rod flow passage communicated with the valve core flow passage and the valve body flow passage; the first sealing ring is positioned between the valve rod and the valve core assembly, and the first sealing ring circumferentially surrounds the joint of the valve core flow passage and the valve rod flow passage. Above-mentioned multiple unit valve, owing to blockking of first sealing washer, can effectively avoid the waste water that flows out from the valve core runner to flow by the clearance between valve block and the valve rod, and then avoid the outer raw water of valve core subassembly to receive the pollution, guarantee that multiple unit valve can normally work.

Description

Multi-way valve and water softener

Technical Field

The application relates to the technical field of water treatment, in particular to a multi-way valve and a water softener.

Background

At present, a tap water source used in cities is usually collected from underground water, but the underground water usually contains angled calcium ions and magnesium ions, so that water is easy to scale in the using process, and further the damage of an electric appliance is caused, hard water is softened, lithiasis can be effectively prevented, the burden of heart and kidney is relieved, the health of people is benefited, meanwhile, the damage of the electric appliance caused by excessive scale accumulation is avoided, and therefore the water softener capable of softening the hard water is used more and more frequently in life.

The water softener usually exchanges calcium and magnesium ions in water through functional ions on resin, so that redundant calcium and magnesium ions in water are adsorbed, and the aim of removing scale is fulfilled. The water softener among the prior art generally includes integrated water route and connects water softener and the confession salt device on integrated water route, and during the raw water got into water softener through integrated water route, the resin layer among the water softener can soften the raw water and export the soft water through integrated water route and supply the user to use. When all the resins are fully adsorbed with calcium and magnesium ions, the water softener can not soften tap water any more, and at the moment, backwashing regeneration is needed to be carried out on the exchange resins. After the salt in the salt supply device is dissolved and saturated by the injected water, the saturated salt solution soaks the resin, so that a large number of sodium ions in the saturated salt solution replace calcium and magnesium ions adsorbed on the resin. When calcium and magnesium ions are replaced, the resin achieves the effect of reduction and regeneration, and the next water softening work is prepared.

In current water softener, the core part of the flow direction of the water in the integrated water route of control is regarded as to the multiple unit valve, switches in different stations through controlling the multiple unit valve, can control rivers and flow at different structures with different directions to realize functions such as water supply, backwash, regeneration, moisturizing, consequently wash the waste water that the resin produced and wait to soften and all gather in the multiple unit valve, how effectively prevent that the waste water pollution raw water in the multiple unit valve becomes the problem that technical staff in the field need to solve urgently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem to having waste water pollution raw water in the multiple unit valve provides a multiple unit valve and water softener, and this multiple unit valve and water softener can reach the technological effect who prevents the waste water pollution raw water in the multiple unit valve.

According to one aspect of the present application, there is provided a multiple-way valve comprising:

the valve body is provided with a valve cavity with an opening at one end and a valve body flow passage communicated with the valve cavity;

the valve core assembly is accommodated in the valve cavity and is provided with a valve core flow passage;

the first axial end of the valve rod extends into the valve cavity to be matched and connected with the valve core assembly in a transmission mode, the second axial end of the valve rod extends out of the opening end of the valve cavity, and the valve rod is provided with a valve rod flow passage communicated with the valve core flow passage and the valve body flow passage; and

the first sealing ring is positioned between the valve rod and the valve core assembly, and the first sealing ring circumferentially surrounds the joint of the valve core flow passage and the valve rod flow passage.

In one embodiment, one end face of one of the valve rod and the valve core assembly, which faces the other end face of the valve rod and the valve core assembly, is provided with a first limiting groove, the first limiting groove circumferentially surrounds a joint of the valve core flow passage and the valve rod flow passage, and the first sealing ring is partially limited in the first limiting groove.

In one embodiment, the multi-way valve further includes a core nut and at least one second sealing ring, the core nut is sleeved outside the first axial end, the core nut is provided with a nut runner communicating the valve stem runner and the valve body runner, and each second sealing ring circumferentially surrounds the valve stem and abuts between the core nut and the valve stem.

In one embodiment, at least one second limiting groove extending along the circumferential direction is formed in the inner side wall of the core nut and/or the outer side wall of the valve rod, and each second sealing ring portion is limited in one second limiting groove.

In one embodiment, the multi-way valve further comprises at least one third sealing ring, and the at least one third sealing ring circumferentially surrounds the outer part of the spool nut and is abutted between the spool nut and the cavity wall of the valve cavity.

In one embodiment, at least one third limiting groove extending along the circumferential direction is formed in the outer side wall of the valve core nut and/or the cavity wall of the valve cavity, and each third sealing ring portion is limited in one third limiting groove.

In one embodiment, the valve rod comprises a valve rod main body and a valve rod built-in piece, the valve rod built-in piece is embedded in one end, close to the valve core assembly, of the valve rod main body, one end, communicated with the valve core flow passage, of the valve rod flow passage is arranged in the valve rod built-in piece, and the first sealing ring is limited between the valve rod built-in piece and the valve core assembly.

In one embodiment, the valve stem comprises at least one fourth seal ring, each of which circumferentially surrounds the valve stem insert and is held between the valve stem insert and a wall of the valve stem receiving cavity.

In one embodiment, at least one circumferentially extending fourth limiting groove is formed in the outer side wall of the valve stem insert and/or the inner side wall of the valve stem body, and each fourth sealing ring portion is limited in one fourth limiting groove.

According to one aspect of the present application, there is provided a water softener including the multi-way valve described above.

Above-mentioned multiple unit valve, owing to blockking of first sealing washer, can effectively avoid the waste water that flows out from the valve core runner to flow by the clearance between valve block and the valve rod, and then avoid the outer raw water of valve core subassembly to receive the pollution, guarantee that multiple unit valve can normally work.

Drawings

FIG. 1 is a schematic view of an internal structure of a multi-way valve according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of the multiplex valve of FIG. 1.

The reference numbers indicate:

100. a multi-way valve; 10. a valve body; 12. a valve cavity; 20. a valve core assembly; 21. a fixed valve plate; 23. a movable valve plate; 232. a valve core flow passage; 30. a valve stem; 32. a valve stem flow passage; 34. a valve stem body; 36. a valve stem insert; 361. a fourth limit groove; 38. a fourth seal ring; 40. a first seal ring; 50. a spool nut; 52. a nut runner; 54. a third limiting groove; 60. a second seal ring; 70. and a third sealing ring.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating an internal structure of a multi-way valve according to an embodiment of the present disclosure; FIG. 2 illustrates an exploded view of the multiplex valve in one embodiment of the present application.

An embodiment of the present application provides a water softener (not shown) that can remove calcium and magnesium ions from raw water through an ion exchange resin, thereby reducing water hardness to provide soft water with low calcium and magnesium ions content to a user. The water softener includes an integrated waterway including a multi-way valve 100 for controlling a flow direction of water, and a water softening device and a salt supply device connected to the integrated waterway.

It should be understood that the following examples are illustrative only and do not limit the technical scope of the present application. In other embodiments, the multi-way valve 100 may be installed in other devices besides the water softener, and is not limited herein.

Referring to fig. 1 and 2, the multi-way valve 100 includes a valve body 10, a valve core assembly 20, a valve rod 30, and a valve core nut 50. Specifically, the valve body 10 is a hollow shell structure, and the valve body 10 is provided with a valve cavity 12 with one open end. The valve core assembly 20 is accommodated in the valve cavity 12 of the valve body 10, the valve core assembly 20 includes a fixed valve plate 21 and a movable valve plate 23, the fixed valve plate 21 is fixedly installed in the valve cavity 12 and is located at the bottom of the valve cavity 12, and the movable valve plate 23 is stacked above the fixed valve plate 21.

A first axial end of the valve rod 30 extends into the valve cavity 12 and is in transmission fit with the movable valve plate 23, a second axial end of the valve rod 30 extends out of an opening end of the valve cavity 12 to be in fit with the driving unit, and the valve rod 30 can drive the movable valve plate 23 to rotate relative to the fixed valve plate 21 under the driving of the driving unit. The spool nut 50 is sleeved outside the first axial end of the valve rod 30 and is accommodated in the valve cavity 12, and the spool nut 50 is used for closing the open end of the valve cavity 12 to form a closed space and simultaneously applying pressure to the spool assembly 20 to form end face sealing between the movable valve plate 23 and the fixed valve plate 21. Furthermore, the valve core assembly 20, the valve rod 30, the valve core nut 50 and the cavity wall of the valve cavity 12 define the raw water channel 14, and raw water which is not softened can flow into the valve core assembly 20 through the raw water channel 14.

In this way, under the driving of the driving unit, the valve rod 30 can drive the valve core assembly 20 to switch in different states, so as to change the working positions of the multi-way valve 100 to realize different functions.

Further, the movable valve sheet 23 includes a first end surface and a second end surface which are oppositely disposed in the thickness direction (i.e., the direction perpendicular to the bottom of the valve chamber 12), and the second end surface is attached to the fixed valve sheet 21. The movable valve plate 23 is provided with a valve core flow passage 232 for discharging wastewater, one end of the valve core flow passage 232 is formed on the second end face, the other end of the valve core flow passage 232 extends from the second end face to the first end face along the thickness direction of the movable valve plate 23, and one end of the valve core flow passage 232, which is communicated with the first end face, is a water outlet end of the valve core flow passage 232.

The first axial end of the valve rod 30 is further provided with a valve rod flow passage 32, one end of the valve rod flow passage 32 extends along the axial direction of the valve rod 30 from the end surface of the valve rod 30 contacting the movable valve plate 23, then extends along the radial direction of the valve rod 30 until being communicated with the outer side wall of the valve rod 30, and the water inlet end of the valve rod flow passage 32 is communicated with the water outlet end of the valve core flow passage 232.

The side wall of the valve core nut 50 is provided with a nut flow passage 52, the nut flow passage 52 extends along the radial direction of the valve core nut 50, and the water inlet end of the nut flow passage 52 is communicated with the water outlet end of the valve rod flow passage 32. The valve body 10 is provided with a valve body flow passage, and the water outlet end of the nut flow passage 52 is communicated with the water inlet end of the valve body flow passage.

Thus, the valve core flow passage 232, the valve rod flow passage 32, the nut flow passage 52 and the valve body flow passage are sequentially communicated, and wastewater generated after the water softening device is cleaned flows into the valve core flow passage 232 from the fixed valve plate 21, then sequentially flows through the valve rod flow passage 32, the nut flow passage 52 and the valve body flow passage and is discharged from the multi-way valve 100.

In order to prevent the waste water from flowing into the raw water channel 14 from the gap between the valve rod 30 and the movable valve plate 23 (i.e., the joint between the valve core flow passage 232 and the valve rod flow passage 32), the multi-way valve 100 further includes a first sealing ring 40 having a circular ring shape, and the first sealing ring 40 is located between the valve rod 30 and the valve core assembly 20 and circumferentially surrounds the joint between the valve core flow passage 232 and the valve rod flow passage 32. Therefore, due to the blocking of the first sealing ring 40, the wastewater flowing out of the valve core flow channel 232 can be effectively prevented from flowing out of the gap between the movable valve plate 23 and the valve rod 30, and further the raw water outside the valve core assembly 20 is prevented from being polluted.

Specifically, a first annular limiting groove is formed in an end face, facing the valve core assembly 20, of the first axial end of the valve rod 30, the first limiting groove circumferentially surrounds a joint of the valve core flow passage 232 and the valve rod flow passage 32, a part of the first sealing ring 40 is limited in the first limiting groove, and the other part of the first sealing ring abuts against the first end face of the movable valve plate 23. In this way, the first seal ring 40 is elastically deformed by the pressure of the valve rod 30, thereby closing the gap between the valve rod 30 and the movable valve plate 23.

It is understood that the number and shape of the first sealing rings 40 are not limited thereto, and may be set as required to meet different sealing requirements. In other embodiments, the first limiting groove may also be opened on an end surface of the valve core assembly 20 facing the valve rod 30, that is, the first limiting groove may alternatively be opened on the valve rod 30 or the valve core assembly 20, or at least one first limiting groove may be opened on both the valve rod 30 and the valve core assembly 20.

In some embodiments, the multiplex valve 100 further includes at least one second seal 60, each second seal 60 circumferentially surrounding the valve stem 30 and being captured between the spool nut 50 and the valve stem 30. In this manner, the gap between the cartridge nut 50 and the stem 30 is sealed by the second seal ring 60.

Specifically, in an embodiment, the multi-way valve 100 includes two second sealing rings 60, two second limiting grooves are formed in the inner side wall of the core nut 50, the two second limiting grooves are axially spaced along the core nut 50, the two second limiting grooves are respectively located at the upper and lower opposite sides of the outlet end of the valve rod flow passage 32, each second limiting groove extends along the circumferential direction of the core nut 50, a part of each second sealing ring 60 is limited in one limiting groove, and the other part abuts against the outer side wall of the valve rod 30.

In this way, the two second sealing rings 60 respectively seal the upper and lower opposite sides of the outlet end of the stem flow path 32, thereby preventing the waste water flowing out of the stem flow path 32 from contaminating the raw water through the gap between the stem 30 and the core nut 50, and simultaneously preventing the waste water flowing out of the stem flow path 32 from flowing out of the multi-way valve 100 through the gap between the stem 30 and the core nut 50.

It will be appreciated that the number and shape of the second seal rings 60 are not limited and may be configured as desired to meet different sealing requirements. In other embodiments, the second limiting groove may also be formed on the outer sidewall of the valve rod 30, that is, the second limiting groove may alternatively be formed on the core nut 50 or the valve rod 30, or at least one second limiting groove may be formed on both the core nut 50 and the valve rod 30.

In some embodiments, the multiplex valve 100 further includes at least one third seal 70, each third seal 70 circumferentially surrounding the core nut 50 and being retained between the core nut 50 and the wall of the valve chamber 12. In this way, the gap between the poppet nut 50 and the wall of the valve chamber 12 is sealed by the third sealing ring 70.

Specifically, in an embodiment, the multi-way valve 100 includes three third sealing rings 70, three third limiting grooves 54 are formed on the outer side wall of the core nut 50, the three third limiting grooves 54 are arranged at intervals along the axial direction of the core nut 50, the water outlet end of the nut flow passage 52 is located between two of the third limiting grooves 54, and two third limiting grooves 54 are arranged between the nut flow passage 52 and the raw water passage 14. Each third limiting groove 54 extends along the circumferential direction of the insert nut 50, and a part of each third sealing ring 70 is limited in one third limiting groove 54, and the other part abuts against the cavity wall of the valve cavity 12.

In this way, the two third sealing rings 70 are located between the water outlet end of the nut runner 52 and the raw water channel 14, thereby ensuring that the waste water flowing out of the nut runner 52 does not pollute the raw water in the raw water channel 14. Furthermore, a third gasket 70 is positioned between the open end of the nut flow passage 52 and the environment to prevent waste water in the nut flow passage 52 from leaking through the gap between the insert nut 50 and the wall of the valve chamber 12.

It is understood that in other embodiments, the third limiting groove 54 may also be formed in the wall of the valve cavity 12, that is, the third limiting groove 54 may alternatively be formed in the core nut 50 or the valve cavity 12, or at least one third limiting groove 54 may be formed in both the core nut 50 and the valve cavity 12.

The utility model discloses the people discovers in the research process, current valve rod adopts integrated into one piece's mode to form usually, nevertheless often can be because of the wall thickness is too thick and take place to warp and can't with the accurate cooperation of case subassembly 20, consequently in some embodiments of this application, valve rod 30 is including the valve rod main part 34 and the built-in piece 36 of valve rod that join in marriage each other and join in marriage, valve rod built-in piece 36 roughly is hollow cylindric structure, valve rod built-in piece 36 inlays and locates the one end that valve rod main part 34 is close to case subassembly 20, valve rod runner 32 communicates case runner 232's one end is seted up in valve rod built-in piece 36, valve rod runner 32 communicates nut runner 52's one end and is formed at valve rod main part 34. The first limit groove is formed in the end face, exposed out of the valve rod main body 34, of the valve rod built-in part 36, and the first seal ring 40 is limited between the valve rod built-in part 36 and the movable valve plate 23.

So, the valve rod 30 is formed through the assembly of the valve rod main body 34 and the valve rod built-in part 36 that the components of a whole that can function independently set up, has avoided the valve rod 30 to take place uncontrollable deformation after processing, has guaranteed the cooperation precision of valve rod 30 and case subassembly 20.

Further, the valve stem 30 includes at least one fourth seal 38, each fourth seal 38 circumferentially surrounding the valve stem insert 36 and being captured between the valve stem insert 36 and the interior sidewall of the valve stem body 34. Thus, the valve stem insert 36 closes the gap between the valve stem insert 36 and the valve stem body 34, and prevents the waste water in the flow passage of the valve body 10 from contaminating the raw water through the gap between the valve stem insert 36 and the valve stem body 34.

Specifically, in an embodiment, the valve rod 30 includes two fourth sealing rings 38, two fourth limiting grooves 361 are disposed on an outer side wall of the valve rod built-in part 36, the two fourth limiting grooves 361 are arranged along an axial direction of the valve rod 30 at intervals, each limiting groove extends along a circumferential direction of the valve rod 30, a part of each fourth sealing ring 38 is limited in one fourth limiting groove 361, and another part of each fourth sealing ring abuts against an inner side wall of the valve rod main body 34.

It is understood that the number of the fourth sealing rings 38 is not limited, and can be set as required to meet different sealing requirements. In other embodiments, the fourth limiting groove 361 may also be disposed on the inner sidewall of the valve stem body 34, that is, the fourth limiting groove 361 may alternatively be disposed on the valve stem insert 36 or the valve stem body 34, or at least one fourth limiting groove 361 may be disposed on both the valve stem insert 36 and the valve stem body 34.

The multi-way valve 100 and the water softener effectively isolate waste water and raw water in the multi-way valve 100 through the arrangement of the first sealing ring 40, the second sealing ring 60, the third sealing ring 70 and the fourth sealing ring 38, thereby avoiding the pollution of the raw water in the multi-way valve 100 by the waste water and ensuring the normal work of the multi-way valve 100. Moreover, the valve rod 30 is formed by assembling the valve rod main body 34 and the valve rod built-in piece 36 which are arranged in a split mode, uncontrollable deformation of the valve rod 30 after machining is avoided, and assembling accuracy of the multi-way valve 100 is guaranteed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A multiple-way valve, comprising:

the valve body (10) is provided with a valve cavity (12) with an opening at one end and a valve body flow passage communicated with the valve cavity (12);

the valve core assembly (20) is accommodated in the valve cavity (12), and a valve core flow passage (232) is formed in the valve core assembly (20);

a first axial end of the valve rod (30) extends into the valve cavity (12) and is in transmission fit with the valve core assembly (20), a second axial end of the valve rod (30) extends out of an opening end of the valve cavity (12), and the valve rod (30) is provided with a valve rod flow passage (32) communicating the valve core flow passage (232) with the valve body flow passage; and

the first sealing ring (40) is positioned between the valve rod (30) and the valve core assembly (20), and the first sealing ring (40) circumferentially surrounds the joint of the valve core flow passage (232) and the valve rod flow passage (32).

2. The multiway valve of claim 1, wherein one of the valve stem (30) and the valve core assembly (20) has a first limiting groove opened on an end surface thereof facing the other, the first limiting groove circumferentially surrounds a junction of the valve core flow passage (232) and the valve stem flow passage (32), and the first sealing ring (40) is partially limited in the first limiting groove.

3. The multiple-way valve according to claim 1, further comprising a spool nut (50) and at least one second seal ring (60), wherein the spool nut (50) is sleeved outside the first axial end, the spool nut (50) is provided with a nut flow passage (52) for communicating the valve stem flow passage (32) with the valve body flow passage, and each second seal ring (60) circumferentially surrounds the valve stem (30) and abuts between the spool nut (50) and the valve stem (30).

4. The multiway valve of claim 3, wherein the inner sidewall of the core nut (50) and/or the outer sidewall of the valve stem (30) defines at least one second retaining groove extending along the circumferential direction, and each of the second sealing rings (60) is partially retained in one of the second retaining grooves.

5. The multiple-way valve according to claim 3, characterized in that the multiple-way valve further comprises at least one third sealing ring (70), wherein the at least one third sealing ring (70) circumferentially surrounds the outside of the spool nut (50) and is abutted between the spool nut (50) and the cavity wall of the valve cavity (12).

6. The multiway valve of claim 5, wherein the outer sidewall of the core nut (50) and/or the wall of the valve chamber (12) defines at least one circumferentially extending third retaining groove (54), and each third seal ring (70) is partially retained in one of the third retaining grooves (54).

7. The multiple-way valve according to claim 1, wherein the valve rod (30) comprises a valve rod main body (34) and a valve rod built-in piece (36), the valve rod built-in piece (36) is embedded at one end, close to the valve core assembly (20), of the valve rod main body (34), one end, communicated with the valve core flow channel (232), of the valve rod flow channel (32) is opened at the valve rod built-in piece (36), and the first sealing ring (40) is limited between the valve rod built-in piece (36) and the valve core assembly (20).

8. The multiple-way valve of claim 7, wherein the valve stem (30) includes at least one fourth seal (38), each fourth seal (38) circumferentially surrounding the valve stem insert (36) and being captured between the valve stem insert (36) and an inner sidewall of the valve stem body (34).

9. The multi-way valve according to claim 8, characterized in that at least one circumferentially extending fourth limiting groove (361) is formed in the outer side wall of the valve stem insert (36) and/or the inner side wall of the valve stem body (34), and each fourth sealing ring (38) is partially limited in one fourth limiting groove (361).

10. A water softener comprising the multi-way valve of any one of claims 1 to 9.

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